将 Grails 升级到 Grails 数据库迁移文件的 2.5.0 时出现 Class Not Found 错误

Question

我正在尝试将 Grails 应用程序从 2.4.3 升级到 2.5.0 版本。 Grails 2.5.0 包含修复和改进，但没有任何重大更改。此外，安装了所有 2.5.0 兼容的插件版本。

还浏览了 Grails 数据库迁移插件更改日志和 支持 grails 2.5.0 的其他插件。 遇到我现在面临的相同 JIRA 问题 - Jira Link，但它已经在旧 Grails 数据库迁移插件版本中修复。

BuildConfig.groovy

grails.servlet.version = "3.0" // Change depending on target container compliance (2.5 or 3.0)
grails.reload.enabled = true
grails.project.class.dir = "target/classes"
grails.project.test.class.dir = "target/test-classes"
grails.project.test.reports.dir = "target/test-reports"
grails.project.target.level = 1.6
grails.project.source.level = 1.6

grails.project.dependency.resolver = "maven"
grails.project.dependency.resolution = {
    inherits("global") {
    }
    log "warn"
    checksums true // Whether to verify checksums on resolve

    repositories {
        inherits true // Whether to inherit repository definitions from plugins
        grailsPlugins()
        grailsHome()
        mavenLocal()
        grailsCentral()
        mavenCentral()
        mavenRepo "http://repo.grails.org/grails/core" // Dependency for export plugin.
    }
    dependencies {
        compile ("org.apache.jclouds.provider:cloudfiles-us:1.6.2-incubating", "org.jclouds:jclouds-compute:1.6.0") {
            excludes "jclouds-core"
        }
        compile 'commons-beanutils:commons-beanutils:1.8.3'
        compile "org.apache.jclouds:jclouds-core:1.7.2"
        runtime 'mysql:mysql-connector-java:5.1.29'
    }

    plugins {
        runtime ':database-migration:1.4.0'
        runtime ":hibernate:3.6.10.18"
        runtime ":jquery:1.11.0.2"
        runtime ":resources:1.2.14"
        compile ":scaffolding:2.1.2"
        compile ':cache:1.1.8'
        build ":tomcat:7.0.55.2"
    }
}

堆栈跟踪 我在默认迁移位置 grails-app/migrations 有一个名为 upgrade-2.1.groovy 的迁移文件

| Error 2015-04-30 10:52:09,868 [localhost-startStop-1] ERROR 
    context.GrailsContextLoaderListener  - Error initializing the 
    application: Error creating bean with name 'grailsApplication' 
    defined in ServletContext resource [/WEB-INF/applicationContext.xml]: 
    Invocation of init method failed; nested exception is 
    org.codehaus.groovy.grails.exceptions.GrailsConfigurationException: 
    Class not found loading Grails application: upgrade-2.1
Message: Error creating bean with name 'grailsApplication' defined 
    in ServletContext resource [/WEB-INF/applicationContext.xml]: 
    Invocation of init method failed; nested exception is 
    org.codehaus.groovy.grails.exceptions.GrailsConfigurationException: 
    Class not found loading Grails application: upgrade-2.1

    Line | Method
->>  262 | run       in java.util.concurrent.FutureTask
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 
|   1145 | runWorker in java.util.concurrent.ThreadPoolExecutor
|    615 | run . . . in java.util.concurrent.ThreadPoolExecutor$Worker
^    745 | run       in java.lang.Thread

Caused by GrailsConfigurationException: Class not found loading Grails application: upgrade-2.1
->>  262 | run       in java.util.concurrent.FutureTask
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 
|   1145 | runWorker in java.util.concurrent.ThreadPoolExecutor
|    615 | run . . . in java.util.concurrent.ThreadPoolExecutor$Worker
^    745 | run       in java.lang.Thread

Caused by ClassNotFoundException: upgrade-2.1
->>  366 | run       in java.net.URLClassLoader$1
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 
|    355 | run       in     ''
|    354 | findClass in java.net.URLClassLoader
|    425 | loadClass in java.lang.ClassLoader
|    262 | run . . . in java.util.concurrent.FutureTask
|   1145 | runWorker in java.util.concurrent.ThreadPoolExecutor
|    615 | run . . . in java.util.concurrent.ThreadPoolExecutor$Worker
^    745 | run       in java.lang.Thread

Answer 1

这与插件或 Grails 无关 - 问题是 upgrade-2.1 不是 Groovy 脚本的有效名称。您只能使用有效类名的名称。您必须将句点替换为另一个字符，也可能是破折号。试试upgrade_2_1.groovy。